What are the characteristics of halogen-free flame retardant magnesium hydroxide?
Magnesium hydroxide is a kind of chemical industry products, especially in the use of halogen-free flame retardants have a deep achievement. Therefore, the product quality is also very good. That friends understand the characteristics of halogen-free flame retardant magnesium hydroxide?
Magnesium hydroxideIs a kind of chemical industry products, especially in the use of halogen-free flame retardants have a deep achievement. Therefore, the product quality is also very good. That friends understand the characteristics of halogen-free flame retardant magnesium hydroxide?
1. The whole process of the decomposition reaction of magnesium hydroxide is as follows: the vaporous water converted from the decomposition reaction can cover the flame, drive out O2, dilute flammable gases, and form an insulating layer on the surface of plastic products touching the flame to block the fluidity of flammable gases and avoid the diffusion of flame, which is similar to the carbonization effect of phosphorus-based flame retardants. Decompose off the material for no harmful substances, the formation of mineral phase, especially MgO, and acid in the level of strong, can quickly neutralize the weak acid and corrosive waste gas formed in the whole process of incineration of plastic products.
2. The decomposition reaction temperature of magnesium hydroxide is 330 ° C. When magnesium hydroxide halogen-free flame retardant is added to plastic products, plastic products can bear higher production and processing temperature, which is conducive to the extrusion speed of plastic products.
3. The decomposition energy of magnesium hydroxide is high (1.37kJ/g) and the heat capacity is also high, which is beneficial to improve the working efficiency of flame retardant.
4. The carbonization of magnesium hydroxide is strong, and the amount of carbonization is large, which can reduce the large-scale conversion of smoke.
5. The hardening strength of magnesium hydroxide particles is small, and the friction on the machine equipment is small.
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Everyone knows that there are two common flame retardants. Today we are going to talk about only one of them. Aluminum hydroxide flame retardant is an environmentally friendly halogen-free flame retardant, which can be widely used in fabrics, wood, plastics, and rubber., Polyurethane and other industries have ideal flame retardant effect. In the process of industrial application, it is found that flame retardant failure occurs when aluminum hydroxide flame retardant is added. The following are the reasons for the failure of aluminum hydroxide flame retardant, how to prevent it, how to deal with the operation, and restore the original function.
As a flame retardant, magnesium hydroxide also need to improve what aspects?
When it comes to flame retardants, everyone is familiar with them. Although we usually have less contact with them, we can know what they are used for from the name. Have to talk about magnesium hydroxide, we all know that its main presentation state is a granular, at present, the market sales of magnesium hydroxide particle size is larger, part of the commodity particle size up to tens of microns, immediately used as a flame retardant, poor dispersion, the physical properties of raw materials greater harm. In industrial production, physical grinding methods are generally used to reduce the particle size to 1 micron. The surface of magnesium hydroxide has high polarity and is easy to agglomerate. As the compatibility of refractory materials and polymer substrates, it not only reduces its flame retardant grade, but also causes more serious harm to the physical properties of raw materials.
Hefei Zhongke Flame Retardant New Material Co., Ltd
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Ministry of Foreign Trade Telephone:13956052398
Comprehensive department Telephone:0551-67712199
Company headquarters address: Hefei Feidong Economic Development Zone Xianghe Road 36
E-mail:hefei@zkxcl.com
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